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Guide: Connectors

A connector is an MCP server muaz can launch and attach to an agent as a set of tools. The catalog on the UI Connectors page has two tiers:

  • Core — the small set muaz CI-tests weekly against real servers. Verified and supported.
  • Community — expected to work, but not verified by muaz (labelled as such and listed below the core group). Remote-registry entries can only present as core with a valid publisher signature; unsigned ones are shown as community.
ConnectorTransportAuthWhat it gives an agent
GitHubstdio (npx)API key (PAT)Issues, PRs, repo contents, search
Filesystemstdio (npx)noneRead/list/search a directory you allow-list
Fetchstdio (uvx)noneFetch and read a URL as clean Markdown
Memorystdio (npx)noneA simple persistent key/value knowledge store
LinearHTTPOAuthIssues, projects, and cycles in Linear

The stdio connectors download their runtime (Node via npx, Python via uvx) on first use — the first connect can take a moment.

  1. Open Connectors, click a core entry to prefill the form.
  2. Fill any required fields — a GitHub PAT (${GITHUB_TOKEN}), the directory for Filesystem, etc. Secrets are stored in your keychain, referenced by ${VAR}.
  3. Save, then Reconnect to confirm it comes up (the status chip turns green; a missing ${VAR} deep-links to the field to fix).
  4. Linear uses OAuth — click Authorize to run the browser sign-in.

Connectors are opt-in per agent. On the Agents page (or in the agent YAML), list the server under tool access and set a level per tool: off (hidden), ask (prompt each call), or auto (run freely). Keep writes at ask.

Not in the catalog? On the Connectors page, Paste config accepts the standard shape and imports every server at once:

{
"mcpServers": {
"my-server": {
"command": "npx -y @scope/my-mcp-server",
"env": { "API_KEY": "${MY_API_KEY}" }
}
}
}

The command accepts an argv array or a single shell-quoted string — the same quoting rule as the UI and mcp.json. env/headers values may be literals or ${VAR} references resolved at connect time.

Put connectors to work in the Connector automation guide.